utclib.c

acpi tools for linux include acpiexec and acpixtract

    return (DstString);
}


/*******************************************************************************
 *
 * FUNCTION:    AcpiUtStrncat (strncat)
 *
 * PARAMETERS:  DstString       - Target of the copy
 *              SrcString       - The source string to copy
 *              Count           - Maximum # of bytes to copy
 *
 * RETURN:      DstString
 *
 * DESCRIPTION: Append a null terminated string to a null terminated string,
 *              with a maximum count.
 *
 ******************************************************************************/

char *
AcpiUtStrncat (
    char                    *DstString,
    const char              *SrcString,
    ACPI_SIZE               Count)
{
    char                    *String;


    if (Count)
    {
        /* Find end of the destination string */

        for (String = DstString; *String++; )
        { ; }

        /* Concatenate the string */

        for (--String; (*String++ = *SrcString++) && --Count; )
        { ; }

        /* Null terminate if necessary */

        if (!Count)
        {
            *String = 0;
        }
    }

    return (DstString);
}


/*******************************************************************************
 *
 * FUNCTION:    AcpiUtStrstr (strstr)
 *
 * PARAMETERS:  String1         - Target string
 *              String2         - Substring to search for
 *
 * RETURN:      Where substring match starts, Null if no match found
 *
 * DESCRIPTION: Checks if String2 occurs in String1. This is not really a
 *              full implementation of strstr, only sufficient for command
 *              matching
 *
 ******************************************************************************/

char *
AcpiUtStrstr (
    char                    *String1,
    char                    *String2)
{
    char                    *String;


    if (AcpiUtStrlen (String2) > AcpiUtStrlen (String1))
    {
        return (NULL);
    }

    /* Walk entire string, comparing the letters */

    for (String = String1; *String2; )
    {
        if (*String2 != *String)
        {
            return (NULL);
        }

        String2++;
        String++;
    }

    return (String1);
}


/*******************************************************************************
 *
 * FUNCTION:    AcpiUtStrtoul (strtoul)
 *
 * PARAMETERS:  String          - Null terminated string
 *              Terminater      - Where a pointer to the terminating byte is
 *                                returned
 *              Base            - Radix of the string
 *
 * RETURN:      Converted value
 *
 * DESCRIPTION: Convert a string into a 32-bit unsigned value.
 *              Note: use AcpiUtStrtoul64 for 64-bit integers.
 *
 ******************************************************************************/

UINT32
AcpiUtStrtoul (
    const char              *String,
    char                    **Terminator,
    UINT32                  Base)
{
    UINT32                  converted = 0;
    UINT32                  index;
    UINT32                  sign;
    const char              *StringStart;
    UINT32                  ReturnValue = 0;
    ACPI_STATUS             Status = AE_OK;


    /*
     * Save the value of the pointer to the buffer's first
     * character, save the current errno value, and then
     * skip over any white space in the buffer:
     */
    StringStart = String;
    while (ACPI_IS_SPACE (*String) || *String == '\t')
    {
        ++String;
    }

    /*
     * The buffer may contain an optional plus or minus sign.
     * If it does, then skip over it but remember what is was:
     */
    if (*String == '-')
    {
        sign = NEGATIVE;
        ++String;
    }
    else if (*String == '+')
    {
        ++String;
        sign = POSITIVE;
    }
    else
    {
        sign = POSITIVE;
    }

    /*
     * If the input parameter Base is zero, then we need to
     * determine if it is octal, decimal, or hexadecimal:
     */
    if (Base == 0)
    {
        if (*String == '0')
        {
            if (AcpiUtToLower (*(++String)) == 'x')
            {
                Base = 16;
                ++String;
            }
            else
            {
                Base = 8;
            }
        }
        else
        {
            Base = 10;
        }
    }
    else if (Base < 2 || Base > 36)
    {
        /*
         * The specified Base parameter is not in the domain of
         * this function:
         */
        goto done;
    }

    /*
     * For octal and hexadecimal bases, skip over the leading
     * 0 or 0x, if they are present.
     */
    if (Base == 8 && *String == '0')
    {
        String++;
    }

    if (Base == 16 &&
        *String == '0' &&
        AcpiUtToLower (*(++String)) == 'x')
    {
        String++;
    }

    /*
     * Main loop: convert the string to an unsigned long:
     */
    while (*String)
    {
        if (ACPI_IS_DIGIT (*String))
        {
            index = (UINT32) ((UINT8) *String - '0');
        }
        else
        {
            index = (UINT32) AcpiUtToUpper (*String);
            if (ACPI_IS_UPPER (index))
            {
                index = index - 'A' + 10;
            }
            else
            {
                goto done;
            }
        }

        if (index >= Base)
        {
            goto done;
        }

        /*
         * Check to see if value is out of range:
         */

        if (ReturnValue > ((ACPI_UINT32_MAX - (UINT32) index) /
                            (UINT32) Base))
        {
            Status = AE_ERROR;
            ReturnValue = 0;           /* reset */
        }
        else
        {
            ReturnValue *= Base;
            ReturnValue += index;
            converted = 1;
        }

        ++String;
    }

done:
    /*
     * If appropriate, update the caller's pointer to the next
     * unconverted character in the buffer.
     */
    if (Terminator)
    {
        if (converted == 0 && ReturnValue == 0 && String != NULL)
        {
            *Terminator = (char *) StringStart;
        }
        else
        {
            *Terminator = (char *) String;
        }
    }

    if (Status == AE_ERROR)
    {
        ReturnValue = ACPI_UINT32_MAX;
    }

    /*
     * If a minus sign was present, then "the conversion is negated":
     */
    if (sign == NEGATIVE)
    {
        ReturnValue = (ACPI_UINT32_MAX - ReturnValue) + 1;
    }

    return (ReturnValue);
}


/*******************************************************************************
 *
 * FUNCTION:    AcpiUtToUpper (TOUPPER)
 *
 * PARAMETERS:  c           - Character to convert
 *
 * RETURN:      Converted character as an int
 *
 * DESCRIPTION: Convert character to uppercase
 *
 ******************************************************************************/

int
AcpiUtToUpper (
    int                     c)
{

    return (ACPI_IS_LOWER(c) ? ((c)-0x20) : (c));
}


/*******************************************************************************
 *
 * FUNCTION:    AcpiUtToLower (TOLOWER)
 *
 * PARAMETERS:  c           - Character to convert
 *
 * RETURN:      Converted character as an int
 *
 * DESCRIPTION: Convert character to lowercase
 *
 ******************************************************************************/

int
AcpiUtToLower (
    int                     c)
{

    return (ACPI_IS_UPPER(c) ? ((c)+0x20) : (c));
}


/*******************************************************************************
 *
 * FUNCTION:    is* functions
 *
 * DESCRIPTION: is* functions use the ctype table below
 *
 ******************************************************************************/

const UINT8 _acpi_ctype[257] = {
    _ACPI_CN,            /* 0x0      0.     */
    _ACPI_CN,            /* 0x1      1.     */
    _ACPI_CN,            /* 0x2      2.     */
    _ACPI_CN,            /* 0x3      3.     */
    _ACPI_CN,            /* 0x4      4.     */
    _ACPI_CN,            /* 0x5      5.     */
    _ACPI_CN,            /* 0x6      6.     */
    _ACPI_CN,            /* 0x7      7.     */
    _ACPI_CN,            /* 0x8      8.     */
    _ACPI_CN|_ACPI_SP,   /* 0x9      9.     */
    _ACPI_CN|_ACPI_SP,   /* 0xA     10.     */
    _ACPI_CN|_ACPI_SP,   /* 0xB     11.     */
    _ACPI_CN|_ACPI_SP,   /* 0xC     12.     */
    _ACPI_CN|_ACPI_SP,   /* 0xD     13.     */
    _ACPI_CN,            /* 0xE     14.     */
    _ACPI_CN,            /* 0xF     15.     */
    _ACPI_CN,            /* 0x10    16.     */
    _ACPI_CN,            /* 0x11    17.     */
    _ACPI_CN,            /* 0x12    18.     */
    _ACPI_CN,            /* 0x13    19.     */
    _ACPI_CN,            /* 0x14    20.     */
    _ACPI_CN,            /* 0x15    21.     */
    _ACPI_CN,            /* 0x16    22.     */
    _ACPI_CN,            /* 0x17    23.     */
    _ACPI_CN,            /* 0x18    24.     */
    _ACPI_CN,            /* 0x19    25.     */
    _ACPI_CN,            /* 0x1A    26.     */
    _ACPI_CN,            /* 0x1B    27.     */
    _ACPI_CN,            /* 0x1C    28.     */
    _ACPI_CN,            /* 0x1D    29.     */
    _ACPI_CN,            /* 0x1E    30.     */
    _ACPI_CN,            /* 0x1F    31.     */
    _ACPI_XS|_ACPI_SP,   /* 0x20    32. ' ' */
    _ACPI_PU,            /* 0x21    33. '!' */
    _ACPI_PU,            /* 0x22    34. '"' */
    _ACPI_PU,            /* 0x23    35. '#' */
    _ACPI_PU,            /* 0x24    36. '$' */
    _ACPI_PU,            /* 0x25    37. '%' */
    _ACPI_PU,            /* 0x26    38. '&' */
    _ACPI_PU,            /* 0x27    39. ''' */
    _ACPI_PU,            /* 0x28    40. '(' */
    _ACPI_PU,            /* 0x29    41. ')' */
    _ACPI_PU,            /* 0x2A    42. '*' */
    _ACPI_PU,            /* 0x2B    43. '+' */
    _ACPI_PU,            /* 0x2C    44. ',' */
    _ACPI_PU,            /* 0x2D    45. '-' */
    _ACPI_PU,            /* 0x2E    46. '.' */
    _ACPI_PU,            /* 0x2F    47. '/' */
    _ACPI_XD|_ACPI_DI,   /* 0x30    48. '0' */
    _ACPI_XD|_ACPI_DI,   /* 0x31    49. '1' */
    _ACPI_XD|_ACPI_DI,   /* 0x32    50. '2' */
    _ACPI_XD|_ACPI_DI,   /* 0x33    51. '3' */
    _ACPI_XD|_ACPI_DI,   /* 0x34    52. '4' */
    _ACPI_XD|_ACPI_DI,   /* 0x35    53. '5' */
    _ACPI_XD|_ACPI_DI,   /* 0x36    54. '6' */
    _ACPI_XD|_ACPI_DI,   /* 0x37    55. '7' */
    _ACPI_XD|_ACPI_DI,   /* 0x38    56. '8' */
    _ACPI_XD|_ACPI_DI,   /* 0x39    57. '9' */
    _ACPI_PU,            /* 0x3A    58. ':' */
    _ACPI_PU,            /* 0x3B    59. ';' */
    _ACPI_PU,            /* 0x3C    60. '<' */
    _ACPI_PU,            /* 0x3D    61. '=' */
    _ACPI_PU,            /* 0x3E    62. '>' */
    _ACPI_PU,            /* 0x3F    63. '?' */
    _ACPI_PU,            /* 0x40    64. '@' */
    _ACPI_XD|_ACPI_UP,   /* 0x41    65. 'A' */
    _ACPI_XD|_ACPI_UP,   /* 0x42    66. 'B' */
    _ACPI_XD|_ACPI_UP,   /* 0x43    67. 'C' */
    _ACPI_XD|_ACPI_UP,   /* 0x44    68. 'D' */
    _ACPI_XD|_ACPI_UP,   /* 0x45    69. 'E' */
    _ACPI_XD|_ACPI_UP,   /* 0x46    70. 'F' */
    _ACPI_UP,            /* 0x47    71. 'G' */
    _ACPI_UP,            /* 0x48    72. 'H' */
    _ACPI_UP,            /* 0x49    73. 'I' */
    _ACPI_UP,            /* 0x4A    74. 'J' */
    _ACPI_UP,            /* 0x4B    75. 'K' */
    _ACPI_UP,            /* 0x4C    76. 'L' */
    _ACPI_UP,            /* 0x4D    77. 'M' */
    _ACPI_UP,            /* 0x4E    78. 'N' */
    _ACPI_UP,            /* 0x4F    79. 'O' */
    _ACPI_UP,            /* 0x50    80. 'P' */
    _ACPI_UP,            /* 0x51    81. 'Q' */
    _ACPI_UP,            /* 0x52    82. 'R' */
    _ACPI_UP,            /* 0x53    83. 'S' */
    _ACPI_UP,            /* 0x54    84. 'T' */
    _ACPI_UP,            /* 0x55    85. 'U' */
    _ACPI_UP,            /* 0x56    86. 'V' */
    _ACPI_UP,            /* 0x57    87. 'W' */
    _ACPI_UP,            /* 0x58    88. 'X' */
    _ACPI_UP,            /* 0x59    89. 'Y' */
    _ACPI_UP,            /* 0x5A    90. 'Z' */
    _ACPI_PU,            /* 0x5B    91. '[' */
    _ACPI_PU,            /* 0x5C    92. '\' */
    _ACPI_PU,            /* 0x5D    93. ']' */
    _ACPI_PU,            /* 0x5E    94. '^' */
    _ACPI_PU,            /* 0x5F    95. '_' */
    _ACPI_PU,            /* 0x60    96. '`' */
    _ACPI_XD|_ACPI_LO,   /* 0x61    97. 'a' */
    _ACPI_XD|_ACPI_LO,   /* 0x62    98. 'b' */
    _ACPI_XD|_ACPI_LO,   /* 0x63    99. 'c' */
    _ACPI_XD|_ACPI_LO,   /* 0x64   100. 'd' */
    _ACPI_XD|_ACPI_LO,   /* 0x65   101. 'e' */
    _ACPI_XD|_ACPI_LO,   /* 0x66   102. 'f' */
    _ACPI_LO,            /* 0x67   103. 'g' */
    _ACPI_LO,            /* 0x68   104. 'h' */
    _ACPI_LO,            /* 0x69   105. 'i' */
    _ACPI_LO,            /* 0x6A   106. 'j' */
    _ACPI_LO,            /* 0x6B   107. 'k' */
    _ACPI_LO,            /* 0x6C   108. 'l' */
    _ACPI_LO,            /* 0x6D   109. 'm' */
    _ACPI_LO,            /* 0x6E   110. 'n' */
    _ACPI_LO,            /* 0x6F   111. 'o' */
    _ACPI_LO,            /* 0x70   112. 'p' */
    _ACPI_LO,            /* 0x71   113. 'q' */
    _ACPI_LO,            /* 0x72   114. 'r' */
    _ACPI_LO,            /* 0x73   115. 's' */
    _ACPI_LO,            /* 0x74   116. 't' */
    _ACPI_LO,            /* 0x75   117. 'u' */
    _ACPI_LO,            /* 0x76   118. 'v' */
    _ACPI_LO,            /* 0x77   119. 'w' */
    _ACPI_LO,            /* 0x78   120. 'x' */
    _ACPI_LO,            /* 0x79   121. 'y' */
    _ACPI_LO,            /* 0x7A   122. 'z' */
    _ACPI_PU,            /* 0x7B   123. '{' */
    _ACPI_PU,            /* 0x7C   124. '|' */
    _ACPI_PU,            /* 0x7D   125. '}' */
    _ACPI_PU,            /* 0x7E   126. '~' */
    _ACPI_CN,            /* 0x7F   127.     */

    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,  /* 0x80 to 0x8F    */
    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,  /* 0x90 to 0x9F    */
    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,  /* 0xA0 to 0xAF    */
    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,  /* 0xB0 to 0xBF    */
    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,  /* 0xC0 to 0xCF    */
    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,  /* 0xD0 to 0xDF    */
    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,  /* 0xE0 to 0xEF    */
    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 /* 0xF0 to 0x100   */
};


#endif /* ACPI_USE_SYSTEM_CLIBRARY */